4th International Conference on Renewable Energy Research and Applications Palermo, Italy, 22-25 Nov 2015 Energy Management of Auxiliary Battery Substation Supporting High-Speed Train on 3 kV DC Systems Vito Calderaro1, Vincenzo Galdi1, Giuseppe Graber1, Alfonso Capasso2, Regina Lamedica2, Alessandro Ruvio2 Antonio Piccolo1 1 DIIn - University of Salerno 2 DAEEE - University of Rome "La Sapienza" Fisciano (SA), Italy Rome, Italy
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[email protected] [email protected] Abstract —The paper propose an energy management strategy for high efficiency battery-based substation (Auxiliary Battery Substation - ABS) able to power weak railways in areas without energy supply from the grid. The proposed control algorithm makes the ABS able to sustain part of the peak current absorbed during traction by high performance trains operating on traditional 3 kV DC rail networks. The proposed solution also, according to the state of charge and of the line voltage, allows the ABS system to recover the train's braking energy making it available to the next train departure. Several simulations are Fig. 1. ABS basic diagram. performed on a real Italian 3 kV railway system feeding a new Another benefit introduced by the ABS is related to the generation high speed train, where the ABS supports existing increase of the energy efficiency of the overall railway system. supply system. The simulation results show that the ABS and its In fact, the ABS storage units in a not regenerative railway control allow the use of high performance trains even on 3 kV plant can host the energy during the braking phase of a train traditional lines not properly powerful.